instructions

Preheat oven to 375°F (190°C).

Heat oil in a very large non-stick pan over medium heat. Add peppers, onion and mushrooms. Sauté until onion is transparent, add ham and garlic, and cook 1 minute more.

While filling is cooking, break eggs into a bowl and add salt and pepper to taste. Whisk everything together. Pour egg mixture into the hot pan. When eggs are partly cooked, sprinkle with grated cheese.

Place pan on top rack of oven until cheese is melted. Remove from oven. Cut omelette into four pieces with a spatula and serve immediately.